Ping It, Baby

One click over to Ping-o-Matic will allow you to notify all the various services out there when you've updated. [Note: This is different than pinging other bloggers' individual entries. Services like Blogrolling use services like weblogs.com to gather your "I've updated" info so they can indicate your status.]

If you use a blogging tool where you can specify/add services to ping (like blo.gs, GeoURL, Technorati, etc.), now you can use Ping-o-Matic to ping all those services with one single XML-RPC call.

So basically you're pasting one address — http://rpc.pingomatic.com/ — into your "ping them when I update" box instead of a whole bunch. When I first started using this I was still getting the usual ping timeout or failure errors, but lately I haven't been. And as far as I can tell every service is getting the info correctly (Yahoo wasn't for a while).